Right on schedule, the open beta for World of Warcraft developer Blizzard Entertainment's shooter Overwatch is now available across PlayStation 4, Xbox One, and PC.You can grab the beta client right now through these links: PS4, Xbox One, PC. The beta was made available earlier this week to people who had preordered the game.The Overwatch beta includes the following content:All 21 heroesQuick Play, Play vs.